Mechanical movement



June 16, 1925. 1,542,486

w. E. WHITE MECHANICAL uovsmmw Filed Sept. 3, 1924 3 Sheets-Sheet 1 June 16, 1925. I 1,542,486

W. E. WHITE MECHANICAL movsmmw Filed Sept. '1924 3 Sheets-Sheet 2 Suva-nice %CZZ Wife June 16, 19-25.

W. E. WHITE MECHANICAL MOVEMENT Filed Sept. 3, 1924 3 Sheets$heet 3 :showing the main and auxiliary levers ;F.1g- .urei3isa-s1de elevation wherem parts have been omltted; F1gure .4 1s. a side KGlGVFJHOII Patented June 16 i nNrr -n &WILLIA1!E; WHITE,0F onrrrron roses, VIRGINIA.

' ,MEC'I'I IGALMO EMENT.

'1 np n non firei September 3, 1924. Serial No. 735,639.

and State of Virginia, have inventeda new and useful Mechanical lilovement, of which "the following is a specification. I

This invention aims to provide novel means whereby, through agsystem of compound levers, motion may be-transmitted from a source of power to'a -p oint*of'-force application. "The invention "aims, further,

to provide novel means tor maintaining a halance in the leveragesystem,and topro- -v-1'de' novel means for operat ng pawls whereby motion '1s=transm1tted,- to avrotary memher.

t is within the province of the disclosure to improvegenerallyqand: to enhance-the utility of devices of'thattype to which the inventionappertains;

Although a preferredform oif 'inven 1 tion has been shown, it willbe understood vthat any person, workingowithinithersco'pe' of what is claimed, may makeichangesand alterations, wlthout departing i-fromnthe spirit. of the invention. 7 i V =l n-the drawings ;Figure 1 shows in top plan,- adevice constructed iin accordance with: the: invention F1gure: 2 1s an :elevation disclosing the i complete ,device Figure 5 .is

an elevation showing the pawls andtattendant iparts port ons beinginsection; Figure 6 isa sectionlonthefline.6+6 of Figure 5; Figure 7 is a sectional top :plan' disclosing the mounting of the mam and auxiliary levers, and the connections ztherebetween;

Figure- '8 is aysectionaleview of the lever mechanismand its mounting, mostparts appearing in elevation; Figure 9 is anend elevation of the: structure delineated in Figure 8, parts being in section. l v c i The numeral 1 manksa founglation carrying a pedestal 2 provided witlr; an upstanding support 3. An auxiliary lever 4 1s provided and carries a fulcrum piece 5 resting on the support 3. mounted in the pedestal 2 and passes through the inner end of the auxiliary lever 4, the same having arcuate slots 7 which permit the auxiliary lever to move with respect to the rod 6. A mam lever 8 18 mounted at one end toswing on the fulcrum arm 14 and a short arm 15.

A fulcrum rod "6 is.

"rod 6. 3A pivot element 9 connects the intermediatejportion of the lever 8, as shown 1n Figure 7, with the inner end of the lever 4-. 1 As thus far described, the device ucomprises an auxiliarylever 4 fulc'rumed intermediate its endstat. 5, a main leverS i fulcrumed at oneJend, as at 6, between" the fulcrum 5' of the auxiliary lever 4 and one '-end of the auxiliary lever, and a pivotal connection9 betwe'en the intermediate portion of-the main lever 8 and sa'idend ofthe auxiliarylever. If, through'the instrumentality of an operating means ,10 of any desired sort, the outer end of-the lever 8 is swung in the direction of the arrow A in Figure 2,-the' outerend of-the main lever 4 will be swung in the-direction ofthe' arrow B the effect of the lever 8 on the lever 4 being compounded,- owing ftO the constructron hereinbefore described;

The numeral 11 designates a hell crank lever -fulcrumed at 12- on the outer end of the auxiliarylever 4 .-and including a-elon g "The long arm 14 of'the bell crank-lever ll extends 'bacl .wardly above the auxiliary lever 4, the short arm 15 extending downwardly with respect to the lever 4. 1 Brackets 16 are pivoted at 1? to :the .auxiliarysleveri 4 'onione side of the fulcrum 35 of said lever,;the upper end of. aiconnectionlS- beingamounted at 19 onlthe brackets 16. intermediate the ends thereof, the lower end ofrthe connection- 18 ibeingzmounted on. the pivotielement 9 which is located in; the. inner end; of the auxiliary [lever 4. -Bell crank leversi20 ,v in the form ofiplates, are, mounted to swing on the fulcrumrod 6 and are pivotally;connected, at

21with the bracketslG, theibell crank levers levers20 being pivoted 211122 tolan approximatelyhorizontal yoke 23, carrying a trans- ;verse connection 24 receiv'ed in elongated slots 25 in links 26 which are pinoted 27 bell crank lever 11. An inner radius arm to thei ow n n of -s wman 1. of; the

28 and an outer radius arm 29 are mounted 1- J intermediate their ends for swinging movement on the fulcrum rod 6, as disclosed in Figure 6. A connection 30 is pivoted at one end, as at 31, to the arm 15 of the bell crank lever 11, a connection 82 being pivoted at 33 to the arm 15 of the bell crank lever. The connection 30 is pivoted at 34 to the arm 28, and the connection 32 is pivoted at 35 to the arm 29. An operating pawl 36 is pivoted at 37 to the arm 28, and an operating pawl 38 is pivoted at 89 to the arm 29. Although the machine may be used to transmit power for any desired purpose, the pawls 36 and 38 are shown as cooperating with a ratchet wheel 40 connected to a drum ll to rotate therewith, the drum being journaled on a support 42, and it being presupposed that the power is to be applied to a weight l-3carried by a flexible element 44 wound about the drum 41. A counterweighted back stop pawl 45 cooperates with the ratchet wheel 40 and is pivoted intermediate its ends on the fulcrum rod 6.

In practical operation, when swinging movement is imparted to the main lever 8, through any suitable instrument-ality shown at 10, swinging movement will be imparted to the auxiliary lever f in the way hereinbefore described, a compound leverage being afforded. The bell crank levers 20 will be operated, and the yoke 23 and the links 26 will swing the bell crank lever 11 on its fulcrum 12, the connections 30 and 32 swinging the arms 28 and29, the pawls 36 and 38 rotating the ratchet wheel ll) and the drum 41, the flexible element 44: being reeled on the drum, and the weight 4L3, for example, being lifted. If at any time the load exceeds the strength of the machine, the bell crank lever 11 will be tilted by means of the pawls 86 and 38, the arms 28 and 29 and the connections 30 and 32, the element 24 of Figure 8 and the links 26 having relative movement, owing to the presence of the elongated slots 25 in the links. 7

When the left hand end of the lever 4; in Figure 4 moves downwardly, the long weight arm 14: of the bell crank lever 11 will tend to swing downwardly at its right hand end, the links 26 tilting the bell crank levers 20 and causing a thrust to be exerted on the pivot element 9 in the inner end of the lever l, through a train of elements including the brackets 16 and the connection 18, the !result being that the levers l and 8 are always balanced, that is, they will remain in any position in which they may have been stopped, assuming, of course, that the machine, is judiciously proportioned.

Having thus described the invention, what is claimed is 1. In adevice of the class described, an

ratchet wheel supported for rotation, a pawlcoacting with the ratchet wheel, a swinging arm whereunto the pawl is connected, means for connecting the swinging arm to the short arm of the bell crank lever, and means for swinging the bell crank lever from the main and auxiliary levers.

2. A device of the class described, constructed as set forth in claim 1, and further characterized by the fact that the lastspecified means embodies a second bcll crank" lever having a fixed fulcrum, means for connecting the second bell crank lever with the main lever, and a connection between the second bell crank lever and the short arm of the first-specified lever.

3. In a device of the class described, an

auxiliary lever fulcrumed intermediate its ends, a main lever fulcrumed at one end between the fulcrum of the auxiliary lever and one end of the auxiliary lover, a pivotal connection between the intermediate portion of the main lever and said end of the auxiliary lever, means for applying power to the other end of the main lever, means for transmitting power from the other end of the auxiliary lever, a bellcrank lever fulcrumed on the last-specified end of the auxiliary lever and including a short arm, and a long weight arm overhanging the auxiliary lever, and means connected with the short arm of the bell crank lever for transmitting a thrust on the pivotal connection due to the weight of the long arm of the bell crank lever.

In testimony that I claim the foregoing WILLIAM E. IVHITE.

Witnesses:

DORATHY CorrRnN, MASON B. LAWTON. 

